the univerter pfc - 375 power factor correction modules are ac to dc converters that operate from a wide range of ac input voltages and frequencies with extremely high conversion efficiency and near unity power factor. the pfc - 375 produces an output of 375 v dc suitable for driving 300v input dc - dc converters, motors, pumps and a host of other loads. the wide ac input voltage range and frequency range are 85 to 265 vac and 47 to 8 0 0 hz respectively, making this product suitable for land, sea and air based app lications requiring ac to dc conversion with line harmonic reduction or pfc. typical applications include 115/230 vac, 50/60 hz systems and 115 vac, 400 hz or 360 - 800 hz military and commercial aircraft power systems requiring mil - std - 704 or do - 160 compl iance. these compact, rugged modules use advanced e lec tr ic al d es i gn a n d th er m al m ana g em ent techniques to m ak e them suitable for harsh environments and thermally challenged applications. optimized for airborne and other harsh environment applications 85 - 265 vac input, 47 - 800hz 37 5 vdc output efficiency 94% typical 115vac, 400hz input, 97% typical at 230vac, 50hz input extremely high power factor and low thd potted module with m etal s ubstrate technology - 40c to +100c base plate rated C no output power derating available in lead free rohs compliant or snpb solder versions ride - through time is essentially unlimited, depends only on the bulk cap voltage pfc - 375 series univerter ? power factor correction module features compact 1/2 brick package 2.4 x 2.3 x 0.5 in. astrodyne usa: 1 - 800 - 823 - 8082 astrodyne pacific: 886 - 2 - 26983458 375 watt pfc front end model selection
pfc - 375 series 375 watt power factor correction module 375 vdc output, ? brick package astrodyne corp. 1 - 800 - 823 - 8082 pfc - 375 datasheet 1 1 - 0 7 - 1 3 page 2 of 7 absolute maximum ratings exceeding absolute maximum ratings may cause permanent damage or reduce reliability parameter option minimum maximum units conditions input voltage (ac1 to ac2) 265 vac continuous input voltage (ac1 to ac2) 311 vac 100ms max. circuit - to - case voltage 2500 vdc storage temperature standard - 55 110 c operating temperature standard - 40 100 c baseplate operating temperature t - 55 100 c baseplate soldering temperature 260 c < 5 sec specifications electrical specifications apply for in = 115vac, 60 hz to 400 hz full load, tc = 25 c and external application circuit components shown in figure 1, unless s pecified otherwise . input specifications minimum typical maximum units conditions input voltage 85 115/230 265 vac input line frequency 47 50/60/400 8 0 0 hz power factor 0.99 1.0 60 hz total harmonic distortion <5% % conforming to iec 1000 - 3 - 2 maximum input current 3.5 4.5 arms vin = 90vac, full load, tc = 25c inrush current input 115 vac 15 apeak thermistor temperature 25c input 230 vac 30 apeak thermistor temperature 25c start - up voltage 8 0 vac * ride through time 75 ms vin = 115vac, 60hz * note: ride through is indefinite if output is held above 220v.
pfc - 375 series 375 watt power factor correction module 375 vdc output, ? brick package astrodyne corp. 1 - 800 - 823 - 8082 pfc - 375 datasheet 1 1 - 0 7 - 1 3 page 3 of 7 output specifications minimum typical maximum units conditions output voltage 370 375 380 vdc vin = 115vac, tc = 25c output over voltage protection 415 vdc non - shutdown vmax. output current 0 1. 0 adc output current limit none efficiency 94% % output ripple 13 v p - p vin = 115vac, f=60hz vaux output voltage (option - a) 10 12.5 18.0 vdc vaux load = 3ma control specifications minimum typical maximum units conditions ld ena threshold (vout rising) 3 55 360 3 7 0 vdc ld ena t hreshold (vout falling) 205 220 235 vdc ld ena logic low current 20 ma ld ena logic low voltage 0.5 vdc isolation specifications minimum typical maximum units conditions input - to - output isolation non - isolated vdc input - to - case isolation 2500 vdc output - to - case isolation 2500 vdc circuit - to - case capacitance 10 n f thermal/ mechanical specifications minimum typical maximum units conditions thermal shutdown temperature 100 105 110 c baseplate temp erature thermal shutdown restart temperature 90 c baseplate temp erature thermal resistance, case to ambient 6.6 c/w natural convection in free air, no heatsink, tc = 100c
pfc - 375 series 375 watt power factor correction module 375 vdc output, ? brick package astrodyne corp. 1 - 800 - 823 - 8082 pfc - 375 datasheet 1 1 - 0 7 - 1 3 page 4 of 7 size 2.40 x 2. 30 x 0.50 inch 1/2 brick weight 4.2 oz. emc compliance external filter compliance rtca do - 160 a strodyne pn: fa250 - 5 rtca do - 160 section 21.3 categories l and m reliability minimum typical maximum units conditions mtbf prediction 2.0 m hrs mil - 217f gb 25c ac1, ac2 the se are the ac input terminals. the input should be connected to a suitable filter such as the f250 - 5 in order for the pfc module to perform properly and to comply with applicable emi/emc performance standards. a suitable fuse and inrush limiting thermistor should be connected in series with the input as well. +o ut this is the positive output terminal. it should be connected to the positive terminal of the bulk capacitor. the 375 vdc outp ut will appear here with respect t o the C o ut terminal. the h old - up capacitor value ranges are provided in the specifications. - out this is the pfc negative output terminal. it should be connected directly to the negative terminal of the hold up capacitor. the hold - up capacitor must be located in close proximity to the pfc output terminals. ld ena th is terminal provides logic control to downstream dc/dc converters. the ld ena signal will be a n active low signal until the pfc output voltage reaches a specified value after the application of input voltage. it will switch logic state to open collector upon the pfc output reaching 340 vdc. if ac power is lost or removed , the ld ena will return to the low state when the pfc output drops to 220 vdc. for most ro dc - dc products, it is not necessary to use the ld ena terminal. v aux (option a) this terminal provides an always on 12.5v pull up capable of providing 3ma. the v aux supply voltage is derived from the output and will be present as long as the bulk cap voltage remains above 180v. pin function/description
pfc - 375 series 375 watt power factor correction module 375 vdc output, ? brick package astrod yne corp. 1 - 800 - 823 - 8082 pfc - 375 datasheet 1 1 - 0 7 - 1 3 page 5 of 7 the connection diagram below show s proper connections of the pfc - 375 module to a typical application circuit including fuse, filter, bulk capacitor and inrush limiting thermistor. figure 1 C typical application circuit the output is suitable for driving 300v input dc - dc converters up to 300w such as the uv300 - 164 series products. additional applications information is available to assist in the selection of the external component s. an evaluation board is available that demonstrates a complete ac - dc system using the pfc - 375, fa250 - 5 filter and uv300 - 164 300w dc - dc converter. evaluation board features : ? pfc output pinned out to 9 pin d - sub ? series or parallel bulk cap connections provided ? dc - dc has remote sense capability C jumpers included, sense pinned out ? led for low voltage dc output indication included ? test points for dc - dc output measurement included ? bnc connector for dc - dc ripple measurement included ? vaux pinned out on eb ? provision for current sharing and 3 phase operation application diagram evaluation board
pfc - 375 series 375 watt power factor correction module 375 vdc output, ? brick package astrodyne corp. 1 - 800 - 823 - 8082 pfc - 375 datasheet 1 1 - 0 7 - 1 3 page 6 of 7 0.90 0.92 0.94 0.96 0.98 1.00 0 100 200 300 400 500 600 power factor pout, watts power factor 115vac, 60hz 230vac, 50hz 85% 90% 95% 100% 0 100 200 300 efficiency, % pout, watts pfc375 efficiency 230vac, 50hz 115vac, 60hz 0 5 10 15 20 25 30 0 100 200 300 power loss, w pout, watts pfc375 losses 230vac, 50hz 115vac, 60hz 0.80 0.85 0.90 0.95 1.00 0 100 200 300 power factor pout, watts power factor 115vac, 400hz 115vac, 800hz 85% 90% 95% 100% 0 100 200 300 efficiency, % pout, watts pfc375 efficiency 115vac, 400hz 115vac, 800hz 0 5 10 15 20 25 30 35 40 45 0 100 200 300 power loss, w pout, watts pfc375 losses 115vac, 400hz 115vac, 800hz
pfc - 375 series 375 watt power factor correction module 375 vdc output, ? brick package astrodyne corp. 1 - 800 - 823 - 8082 pfc - 375 datasheet 1 1 - 0 7 - 1 3 page 7 of 7 mechanical drawing
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